package com.mybatisplus.mp.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.cache.CacheProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
@EnableCaching
@EnableConfigurationProperties(CacheProperties.class)
public class MyCacheConfig {

    /**
     * 有了这个，redis就不会用默认的配置
     * 配置文件没用上的原因：用自己的配置不走默认配置了
     *
     * @return
     */
    @Bean
    RedisCacheConfiguration redisCacheConfiguration(CacheProperties cacheProperties) {
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
        //key的序列化用string
        config = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()));
        //value的序列化json
        config = config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));
        // 将配置的生效
        CacheProperties.Redis redisProperties = cacheProperties.getRedis();
        // 过期时间
        if (redisProperties.getTimeToLive() != null) {
            config = config.entryTtl(redisProperties.getTimeToLive());
        }
        // 前缀名称
        if (redisProperties.getKeyPrefix() != null) {
            config = config.prefixKeysWith(redisProperties.getKeyPrefix());
        }
        // 是否缓存空值
        if (!redisProperties.isCacheNullValues()) {
            config = config.disableCachingNullValues();
        }
        // 是否使用key前缀
        if (!redisProperties.isUseKeyPrefix()) {
            config = config.disableKeyPrefix();
        }

        return config;
    }
}
